{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-89721 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-89721 is a memory corruption vulnerability in Linux, published on 11 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-89721 and fix it if it is affected.\n\nWhat it is: CVE-2026-89721 is a memory corruption vulnerability in Linux, published on 11 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-89721 in the wild and no public exploit code.\n\nAffected product: Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-89721/ (Markdown: https://insights.sbomify.com/CVE-2026-89721/index.md)","id":"CVE-2026-89721","markdown":"https://insights.sbomify.com/CVE-2026-89721/index.md","name":"CVE-2026-89721","record":{"aliases":["BELL-CVE-2026-89721","DEBIAN-CVE-2026-89721","GHSA-jrrm-mv6f-g3m6","UBUNTU-CVE-2026-89721"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Linux kernel driver","requires_auth":"low_privilege","summary":"A local attacker with debugfs access can trigger an out-of-bounds read in the Rockchip Samsung DCPHY driver, causing a kernel oops and subsequent deadlock.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nphy: rockchip-samsung-dcphy: fix out-of-range max_register\n\nThe PHY register block is 64KB, so with a register stride of 4 the\nlast accessible register sits at offset 0xfffc. max_register names\n0x10000, one register past the end of the mapping: dumping the\nregisters through the regmap debugfs interface reads beyond the\nioremapped region and oopses on the unmapped page. The oops fires\nwith the regmap lock held, so later PHY operations deadlock.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"phy: rockchip-samsung-dcphy: fix out-of-range max_register","id":"CVE-2026-89721","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"PCI/sysfs: Fix out-of-bounds read in pci_write_legacy_io()","id":"CVE-2026-89722"},"packages":[],"prev":{"headline":"ubifs: fix out-of-bounds read in signature length check","id":"CVE-2026-89720"},"products":["Linux"],"published":"2026-09-11","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"A local attacker with debugfs access can trigger an out-of-bounds read in the Rockchip Samsung DCPHY driver, causing a kernel oops and subsequent deadlock.","url":"https://insights.sbomify.com/CVE-2026-89721/"}